Answer:
A.
Explanation:
the gradual movement of the continents across the earth's surface through geological time.
Replacement I think, hope this helps ;)
Explanation:
Answer: it honestly depends.
Explanation:
I'm not sure I'm sorry for that but I found this http://www.chem4kids.com/files/atom_ions.html
1. An atom has an equel number of protons and electrons. Since protons are positive and electrons are negative, they are balanced out and there is no charge.